Miguel L. Pardal

  • Citations Per Year
Learn More
Radio Frequency Identification (RFID) technology allows automatic data capture from tagged objects moving in a supply chain. This data can be very useful if it is used to answer traceability queries, however it is distributed across many different repositories, owned by different companies. Discovery Services (DS) are designed to assist in retrieving the(More)
Web Services were designed for Enterprise systems. They are a flexible but complex technology, with numerous performance pitfalls for developers. They also have significant overhead when compared with platform-specific solutions (e.g. Java RMI). The end solutions have to combine (virtualized) platform, application framework, and application-specific code.(More)
Service-Oriented Architecture (SOA) and Web Services (WS) offer advanced flexibility and interoperability capabilities. However they imply significant performance overheads that need to be carefully considered. Supply Chain Management (SCM) and Traceability systems are an interesting domain for the use of WS technologies that are usually deemed to be too(More)
Web Services (WS) are an important tool for the integration of enterprise applications. With a growing set of WS related standards (WS-*), the technology has become increasingly more complicated to configure and manage, even more so when the Quality of Service (QoS) requirements of the system are changing. This paper presents the results of a study(More)
The Border Gateway Protocol (BGP) plays a critical role in the Internet providing connectivity to hosts across the world. Unfortunately, due to its limited security, attackers can hijack traffic by generating invalid routes. Some detection systems for route hijacking have been presented, but they require non-public information, high resources, or can easily(More)
Communication through the Internet raises privacy and confidentiality concerns. Protocols such as HTTPS may be used to protect the communication, but occasionally vulnerabilities that may allow snooping on packet content are discovered. To address this issue, we present MACHETE, an application-layer multi-path communication mechanism that provides(More)
Radio frequency identification (RFID) is an automatic identification technology making its way to supply chains in Retail, Pharmaceutical, and other industries. RFID extends the reach of supply chain information systems in such a way that it will soon be possible and economically feasible to tag valuable physical objects and then to track and trace them,(More)